//: generics/Store.java
package com.dozy.learn.generics;

// Building up a complex model using generic containers.
import java.util.*;
import net.mindview.util.*;

class Product {
    private final int id;
    private String description;
    private double price;

    public Product(int IDnumber, String descr, double price) {
        id = IDnumber;
        description = descr;
        this.price = price;
        System.out.println(toString());
    }

    public String toString() {
        return id + ": " + description + ", price: $" + price;
    }

    public void priceChange(double change) {
        price += change;
    }

    public static Generator<Product> generator = new Generator<Product>() {
        private Random rand = new Random(47);

        public Product next() {
            return new Product(rand.nextInt(1000), "Test", Math.round(rand
                    .nextDouble() * 1000.0) + 0.99);
        }
    };
}

class Shelf extends ArrayList<Product> {
    public Shelf(int nProducts) {
        Generators.fill(this, Product.generator, nProducts);
    }
}

class Aisle extends ArrayList<Shelf> {
    public Aisle(int nShelves, int nProducts) {
        for (int i = 0; i < nShelves; i++)
            add(new Shelf(nProducts));
    }
}

class CheckoutStand {
}

class Office {
}

public class Store extends ArrayList<Aisle> {
    @SuppressWarnings("unused")
    private ArrayList<CheckoutStand> checkouts = new ArrayList<CheckoutStand>();
    @SuppressWarnings("unused")
    private Office office = new Office();

    public Store(int nAisles, int nShelves, int nProducts) {
        for (int i = 0; i < nAisles; i++)
            add(new Aisle(nShelves, nProducts));
    }

    public String toString() {
        StringBuilder result = new StringBuilder();
        for (Aisle a : this)
            for (Shelf s : a)
                for (Product p : s) {
                    result.append(p);
                    result.append("\n");
                }
        return result.toString();
    }

    public static void main(String[] args) {
        System.out.println(new Store(14, 5, 10));
    }
} /* Output:
258: Test, price: $400.99
861: Test, price: $160.99
868: Test, price: $417.99
207: Test, price: $268.99
551: Test, price: $114.99
278: Test, price: $804.99
520: Test, price: $554.99
140: Test, price: $530.99
...
*///:~
